mirror of
https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
93 lines
2.1 KiB
C
93 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Generic PHY Management code
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*
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* Copyright 2011 Freescale Semiconductor, Inc.
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* author Andy Fleming
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*
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* Based loosely off of Linux's PHY Lib
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*/
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#include <config.h>
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#include <common.h>
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#include <miiphy.h>
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#include <phy.h>
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int gen10g_shutdown(struct phy_device *phydev)
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{
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return 0;
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}
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int gen10g_startup(struct phy_device *phydev)
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{
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int devad, reg;
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u32 mmd_mask = phydev->mmds & MDIO_DEVS_LINK;
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phydev->link = 1;
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/* For now just lie and say it's 10G all the time */
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phydev->speed = SPEED_10000;
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phydev->duplex = DUPLEX_FULL;
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/*
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* Go through all the link-reporting devices, and make sure
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* they're all up and happy
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*/
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for (devad = 0; mmd_mask; devad++, mmd_mask = mmd_mask >> 1) {
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if (!(mmd_mask & 1))
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continue;
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/* Read twice because link state is latched and a
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* read moves the current state into the register */
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phy_read(phydev, devad, MDIO_STAT1);
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reg = phy_read(phydev, devad, MDIO_STAT1);
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if (reg < 0 || !(reg & MDIO_STAT1_LSTATUS))
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phydev->link = 0;
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}
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return 0;
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}
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int gen10g_discover_mmds(struct phy_device *phydev)
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{
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int mmd, stat2, devs1, devs2;
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/* Assume PHY must have at least one of PMA/PMD, WIS, PCS, PHY
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* XS or DTE XS; give up if none is present. */
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for (mmd = 1; mmd <= 5; mmd++) {
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/* Is this MMD present? */
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stat2 = phy_read(phydev, mmd, MDIO_STAT2);
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if (stat2 < 0 ||
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(stat2 & MDIO_STAT2_DEVPRST) != MDIO_STAT2_DEVPRST_VAL)
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continue;
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/* It should tell us about all the other MMDs */
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devs1 = phy_read(phydev, mmd, MDIO_DEVS1);
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devs2 = phy_read(phydev, mmd, MDIO_DEVS2);
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if (devs1 < 0 || devs2 < 0)
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continue;
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phydev->mmds = devs1 | (devs2 << 16);
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return 0;
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}
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return 0;
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}
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int gen10g_config(struct phy_device *phydev)
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{
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/* For now, assume 10000baseT. Fill in later */
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phydev->supported = phydev->advertising = SUPPORTED_10000baseT_Full;
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return gen10g_discover_mmds(phydev);
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}
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struct phy_driver gen10g_driver = {
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.uid = 0xffffffff,
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.mask = 0xffffffff,
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.name = "Generic 10G PHY",
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.features = 0,
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.config = gen10g_config,
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.startup = gen10g_startup,
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.shutdown = gen10g_shutdown,
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};
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